Pierrepont is a town and hamlet in St. Lawrence County, New York, United States. As of the 2020 census, the town population was 2,523. It was named after Hezekiah Pierrepont, the early owner of much of the town's territory. The Town of Pierrepont is centrally located in the county and is southeast of Canton. A hamlet of the same name is in the town of Pierrepont. Pierrepont Manor, however, is located in Jefferson County.

Hezekiah Beers Pierrepont was a merchant, farmer, landowner and land developer in Brooklyn and New York state. He restored the spelling of the family surname from "Pierpont" to "Pierrepont", its original French spelling.